nginx编译安装
===========================================
Nginx官网：http://nginx.org/
Nginx官网下载地址（选择 Stable version 稳定版）：http://nginx.org/en/download.html
官网安装介绍：http://nginx.org/en/linux_packages.html


一：安装

1.1：环境准备
    ~]# yum -y install gcc gcc-c++  pcre-devel  openssl-devel

2.2：编译安装
    ~]# tar -axf nginx-1.10.0.tar.gz

    ~]# cd nginx-1.10.0/

    ~]# ./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_stub_status_module --with-http_auth_request_module --with-threads --with-stream --with-stream_ssl_module --with-http_slice_module --with-file-aio --with-http_v2_module

    ~}# make && make install



    
1.3：加入环境变量
        ~]# echo 'export PATH=$PATH:/usr/local/nginx/sbin/' >  /etc/profile.d/nginx.sh
        
        ~]# source /etc/profile.d/nginx.sh


1.4：启动与重启停止
        启动：nginx
        重载：nginx -s reload
        快速停止：nginx -s stop
        有序退出：nginx -s quit


1.5：加入系统服务与开机启动

CentOS 6 
    ~]# vi /etc/rc.d/init.d/nginx
    ~]# chmod +x /etc/rc.d/init.d/nginx

--------------------------file start---------------------------------
#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)

sysconfig="/etc/sysconfig/$prog"
lockfile="/var/run/nginx.lock"
pidfile="/var/run/${prog}.pid"

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f $sysconfig ] && . $sysconfig

start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    echo -n $"Starting $prog: "
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p $pidfile $prog
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest_q || return 6
    stop
    start
}

reload() {
    configtest_q || return 6
    echo -n $"Reloading $prog: "
    killproc -p $pidfile $prog -HUP
    echo
}

configtest() {
    $nginx -t -c $NGINX_CONF_FILE
}

configtest_q() {
    $nginx -t -q -c $NGINX_CONF_FILE
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

# Upgrade the binary with no downtime.
upgrade() {
    local oldbin_pidfile="${pidfile}.oldbin"

    configtest_q || return 6
    echo -n $"Upgrading $prog: "
    killproc -p $pidfile $prog -USR2
    retval=$?
    sleep 1
    if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then
        killproc -p $oldbin_pidfile $prog -QUIT
        success $"$prog online upgrade"
        echo 
        return 0
    else
        failure $"$prog online upgrade"
        echo
        return 1
    fi
}

# Tell nginx to reopen logs
reopen_logs() {
    configtest_q || return 6
    echo -n $"Reopening $prog logs: "
    killproc -p $pidfile $prog -USR1
    retval=$?
    echo
    return $retval
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest|reopen_logs)
        $1
        ;;
    force-reload|upgrade) 
        rh_status_q || exit 7
        upgrade
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    status|status_q)
        rh_$1
        ;;
    condrestart|try-restart)
        rh_status_q || exit 7
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|reload|configtest|status|force-reload|upgrade|restart|reopen_logs}"
        exit 2
esac
--------------------------file end---------------------------------
    开机启动
        ~]# chkconfig --add nginx
        ~]# chkconfig --level 345 nginx on
        ~]# chkconfig --list nginx
            nginx           0:off   1:off   2:off   3:on    4:on    5:on    6:off

    开机不启动
        ~]# chkconfig nginx off
        ~]# chkconfig --list nginx
            nginx           0:off   1:off   2:off   3:off   4:off   5:off   6:off




CentOS 7：
    ~]# vi /usr/lib/systemd/system/nginx.service
--------------------------file start---------------------------------
[Unit]  
Description=nginx  
After=network.target remote-fs.target nss-lookup.target

[Service]  
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx  
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s  stop
PrivateTmp=true  

[Install]  
WantedBy=multi-user.target
--------------------------file end---------------------------------

    开机启动
        ~]# systemctl enable nginx.service
    开机不启动
        ~]# systemctl disable nginx.service
    其他操作：
        ~]# systemcl ( status | start | stop | reload | restart ) nginx.service


    其他操作：
        ~]# service nginx (start|stop|reload|configtest|status|force-reload|upgrade|restart|reopen_logs)
